Crimson Skies is an arcade flight video game developed by Zipper Interactive and published by Microsoft Game Studios. Although a flight based game, Crimson Skies is not a genuine flight simulator, as the game is based less on flight mechanics than on action.

The game is set in an alternate history of the 1930s in which the United States has fragmented into a number of smaller sovereignties, and in which air travel has become the primary mode of transportation in North America. The game centers on Nathan Zachary, an adventurous air pirate seeking to rob the affluent of their wealth and power. Throughout the campaign, Zachary leads his gang of air pirates, the Fortune Hunters, on a quest to gain fame and riches.